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Thanks for the quick response, Chad.

Nuts, I did send the wrong link. That's not the one I have, and I can't find mine on Sparkfun now. Here are pics of the one I'm using (the rear view is a pic of my second IMU, which is still in the bag, but it's exactly the same as the one I'm using):

http://www.flickr.com/photos/32636847@N07/5885257440/in/photostream http://www.flickr.com/photos/32636847@N07/5885257380/in/photostream/

You can see the rate pin there; sorry about sending the wrong link. I have +5V connected to the +5V from the Create, GND connected to ground from the Create, and RATE connected to the analog in on the Create.

Yes, the voltage does exactly what I expect when I rotate the gyro. That part is verified, at least. It's really the only thing I'm confident about. :)

The BAM in this case is just a passthrough; it communicates on the RX/TX pins to replace the serial connection, but passes through the remainder of the pins. I've tried connecting the IMU directly to the correct pins on the Create's DB-25 with the same results: "Still waiting for IMU".

Ideally, I'd like to know that the Create is interpreting the RATE correctly. I'm in a lecture right now, but over lunch I will try two things:

1. I just noticed that pin 8 (Switched 5V) in the bay is listed in the docs as "provides... analog reference voltage when Create is switched on", so it could be as simple as that, right?

2. Looks like I can get the AIN voltage (0-5V as 0-1024 digital) as one of the Create's sensor values. I'll do a dump and see what that reports. That should either identify the Create or the software as the problem. I'll get back to you in a couple of hours and let you know.

Thanks again!